Vapor-lamp



I. W. PETTIBONE.

Gas Burner. No. 28,299. I Patented May 15, 1860.

N. PETERS. Phmoilnmgnpm Washingtom D. c,

UNITED STATES PTEN T OFFICE.

IRA \V. PETTIBONE, OF NORFOLK, CONNECTICUT.

VAPOR-LAMP.

Specification of Letters Patent No. 28,299, dated May 15, 1860.

To all whom it may concern:

Be it known that I, IRA W. PETTIBONE, of Norfolk, in the county ofLitchfield and State of Connecticut, have invented certain new anduseful Improvements in Burners for Vapor-Lamps, and that the followingis a full, clear, and exact description of the same, reference being hadto the accompanying drawings, in which Figure 1 represents a sideelevation of a burner embodying my improvements; Fig. 2, an elevation ofthat side of the same which is nearer the reservoir of fluid. Fig. 3 isa plan of the same. Fig. 4 is a vertical section of the same at the line00 w of Fig. 3, and Fig. 5 is a horizontal section of the same at theline as 00 of Fig. 4.

My invention relates to that class of lamps in which the vapor of aninflammable liquid is mixed with air and burned, and the objects of myimprovements are first to prevent the choking of the valve or orificethrough which the vapor enters the mixing chamber by the accumulation ofgum or resinous matter that is deposited by the vapor in passing throughthe small orifice; second, to prevent the whistling which accompaniesthe admission of air into the mixing chamber of the burner; and third,to render the burner more durable at the valve where the vapor of theliquid enters the mixing chamber.

The first part of my invention has reference to the first object, andconsists in combining a supplementary valve with the one usuallyemployed in vapor lamps to regulate the distribution of the vapor intothe mixing chamber, the supplementary valve having a larger orifice thanthe other, and the two valves being separated by a space, so that thevapor passes through the orifice of the supplementary valve before itpasses through the other. With a burner having this combination ofvalves the deposit of gum is transferred from the valve at the mixingchamber to the supplementary valve, and as the orifice of this valve islarger than is sufficient to pass the vapor, the deposit does notaccumulate in sufficient quantities to injure the effect of the burnerduring the customary number of hours that a lamp is required to burn inone evening.

The second part of my invention consists in combining with the mixingchamber one or more elongated air tubes through which the air isadmitted, in contradistinction to its direct admission through orifices;and I have found that if these tubes are of sufiicient length thewhistling does not annoy the user.

The third part of my invention consists in combining with a conicalpointed screw forming the valve, a block of hard metal perforated toform the orifice for the vapor, in contradistinction to forming thispart of the burner of the same material as the remainder; thisimprovement greatly increases the durability of the burner, as thewearing of the orifice, which in burners of the ordinary constructiongives out before the remainder of the burner, is to a great extentprevented.

The burner represented in the accompanying drawings embodies all myimprovements in it the nozzle a, from which the jet of mixed vapor andair issues, is formed at the top of a tubular chamber B, in which themixing of the two takes place. The nozzle is surmounted by two heaters,c and cl, which are secured to the exterior of the tubular chamber (B)project upward from it on either side of the jet of flame, and transmitto the chamber the heat imparted to them by the flame.

The base of the chamber B is hollow, and is fitted with a conicalpointed screw h, whose conical end fits a perforation or orifice in ablock of steel e, that closes the bot tom of the chamber and forms apartition between it and a second chamber & beneath; the side of thelatter is perforated to form the orifice of the supplementary valve t,which is also a conical pointed screw, the point being more obtuse thanthat of the other (It). This second orifice communicates with a lateralchamber F, that communicates with the wick tube G, leading from thereservoir of camphene or other fluid to be burned.

The chamber B has two orifices a, in its sides just above the partition6, and these communicate with a tube H through which air passes to theorifices. This tube in the present instance has a square section, and itis fitted with an air valve 8 by means of which the supply of air can becontrolled; it is also made removable so that it can be slipped off topermit the cleaning of the orlfice of the valve it through the openmgsn.

When the burner is in action, the fluid passing from the reservoir isheated and is vaporized in whole or in partythe vapor passes through thetwo valves, mixes in the chamber B with the air entering through the airtubes H, and the mixed jet issues at the nozzle a, where it burns. Asthe heaters embrace the burning jet they receive heat from it andtransmit the heat to the body of the burner, so that the heating of theburner and the vaporization of the liquid, when once commenced, 0 oncontinuously. The quantity of fiui vaporized is controlled by the screwsh and t, and the quantity of air by the air valve 8, and when these havebeen properly adjusted the jet burns without appreciable smoke and withgreat steadiness.

I do not claim to be the first who devised a burner for vaporizing aninflammable liquid and mixing the same with air, but

2. I also claim the combination of the mixing chamber with an air tubeor tubes to deaden the whistling noise which generally accompanies suchburners.

3. I also claim arranging the air tube in such manner with reference tothe mixing chamber of the vapor burner that it can be removed therefromto permit cleaning substantially as herein set forth.

In testimony whereof I have hereunto subscribed my name.

IRA- W. PETTIBONE. Vitnesses F. H. \VALooTT, A. G. PETTIBONE.

